[vaharold]

Original owner of 01' Tundra SR5 V6 with 151,000 miles. Great truck, but now getting CEL and diagnostic code P1135. I replaced the rear (heated) O2 Sensor, but still have the code & CEL. Anyone know where to look next?
Thanks.

 

[gbstundra002000]

Did you clear the code from the computer?

 

[vaharold]

Yup, Tried clearing code with OBDII scanner and also disconnected battery. Code comes right back on second engine start... I've done some more research, and found I may have changed the wrong sensor... I read now that this code is caused by the FWD O2 sensor (before cat converter). I ordered a new sensor,,, will see what it does.